On Feb 2 I deactivated all but 1 image (in my admittedly tiny portfolio).  Today, I tried to reactivate one just to see what would happen.  I got this:

Oh, yesterday I requested to close my account with 1 image left - just to see what would happen. Surprise - no response ;-)

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How old was the file you tried to reactivate?  I believe that with any file uploaded more than 18 months ago you have to go through CR to reactivate.
More importantly, why are you interested in reactivating?  Things haven't gotten any better there since Feb 2.

It was older than 18 months.   All my IS images are old, because I quit submitting to them long ago.

I thought I might reactivate a couple of my Photo+ images that used to make me some money, mostly as an experiment, just to see if they'd still sell or if my account has been poisoned somehow.   They won't get any new ones from me.  I can't quite bring myself to close the account because that one remaining photo sells every day;  and who knows, maybe IS gets sold again and the whole picture changes, so I'd like to have an active account.